In a blender or food processor, combine the first 4 ingredients. Blend/Process for 2 minutes. (DO NOT TURN OFF MACHINE). With the machine (STILL) running, (now here comes the trickiest part. .) SLOWLY (meaning DRIZZLE) the oil and lemon juice, alternating between the two until both are fully incorporated. Pour the mixture in an airtight container and refrigerator for 6 hours (BEFORE USE – this gives it a chance for all the ingredients to take to each other and thicken up) or for up to 1 month.